Hewlett-Packard Development Company, L.p.

Andrew T Davis

Wesley R Schalk

Justin M Roman

Jeffrey G Bingham

Dennis J Schissler

Al Olson

Kit L Harper

Michael Lee Hilton

In one example, a document scanner has a fixed-position scan bar and a built-in translatable calibration target. The scan bar has a linear array of imaging elements aimed in an imaging direction. The calibration target is spaced apart from and parallel to the linear array, and has a planar surface orthogonal to the imaging direction spanning the length of the linear array. The target is translatable during a calibration in a direction in a plane of the surface.

Translatable scanner calibration target

According to an example, an apparatus to prevent media transport jams may include an actuator to load and advance a media within a media path width. The apparatus may also include a first sensor and a second sensor to detect respective edges of the media, in which the first sensor and the second sensor may be positioned outside of a media action area and on opposite sides of the media path width. The apparatus may further include a controller to prevent the actuator from advancing the media along the media path in response to a detection of one or both of the first edge of the media by the first sensor and the second edge of the media by the second sensor.

Media transport jam prevention

Example embodiments of wiping are shown and described in which a print head is wiped along a non-linear path.

Wiping

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Vancouver, WA, United States of America

Andrew T Davis